NVIDIA GPU Error Code 43
What is this error?
Device Manager shows 'Windows has stopped this device because it has reported problems (Code 43)' for the NVIDIA GPU.
Common causes
- GPU hardware failure
- incompatible driver
- BIOS/UEFI issue
- Windows not recognizing GPU properly
- GPU BIOS corruption
How to fix it
- DDU clean install driver
- reseat GPU
- update motherboard BIOS
- check GPU in another system
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
Error Code 43 in Device Manager for your NVIDIA GPU means Windows disabled the device because it's reporting errors. This can be a driver issue or a sign of GPU hardware failure.
How to fix it:
- DDU clean install: Safe Mode > DDU > restart > install latest NVIDIA driver. This fixes most software causes
- Reseat the GPU — remove it, clean the PCIe contacts with isopropyl alcohol, firmly reinstall
- Check PCIe power cables — make sure all required power connectors are plugged in
- Update motherboard BIOS — some BIOS versions have GPU compatibility issues
- Try the GPU in a different PCIe slot
- Check if the GPU works in another computer — this determines if it's a hardware or system issue
- If Code 43 appears on a laptop, you may need a specific driver version from the laptop manufacturer, not NVIDIA's generic driver
- Persistent Code 43 across multiple driver versions and systems means the GPU is failing — check warranty status
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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